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ANSWERS

NikkiCertified GKH Gardening Expert

Answered on April 27, 2011

Yes, most resources do specify cutting back branches 8-12 inches from the canker margin, or affected area. However, I recommend 12 inches, as the canker margins are not always well defined and at least this way, you're more likely to get all of the infected area. Always better to be on the safe side.